| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
648
|
Mon Apr 1 07:56:01 2019 |
Gabriele | General | Measurements | S1600546 S1600551 S1600552 S1600554 | 2019-04-01
7:50am in
chamber
S1600546 in CR1
S1600551
in CR2
S1600552 in CR3
S1600554 |
|
|
518
|
Fri Apr 13 10:39:04 2018 |
Gabriele | General | Measurements | S1600620 S1600621 S1600623 S1600624 | 2018-04-13
10:37am
in chamber
S1600620 in CR1
S1600621
in CR2
S1600623 in CR3
S1600624 |
|
|
500
|
Wed Mar 28 15:46:55 2018 |
Gabriele | General | Measurements | S1800611 S1800612 S1800613 S1800614 | 2018-03-28
3:45pm in
chamber
S1800611 in CR1
S1800612
in CR2
S1800613 in CR3
S1800614 |
|
|
501
|
Thu Mar 29 09:17:11 2018 |
Gabriele | General | Measurements | S1800615 S1800616 S1800617 S1800618 | 2018-03-29
9:15am in
chamber
S1800615 in CR1
S1800616
in CR2
S1800617 in CR3
S1800618 |
|
|
209
|
Wed Nov 23 08:55:41 2016 |
Gabriele | General | Noise hunting | "Advanced" vibration isolation | In normal conditions the RMS of the QPD
signals is dominated by the 58 Hz line generated
by the roughing pump. Also, when the modes |
|
|
180
|
Sat Nov 12 09:49:07 2016 |
Gabriele | General | Measurements | 12 substrates ready for Montreal | The 12 following substrates have been measured
and are ready for the first coating experiment
in Montreal: |
|
|
445
|
Mon Dec 11 08:49:08 2017 |
Gabriele, Aaron, Brittany, Seth | General | Measurements | 50mm / 0.5mm substrate from University Wafers |
Installed in the test chamber CR0
Excitations:
Quiet
time before excitation: 1196822477
Excitation broadband: 1196822509 |
|
|
15
|
Thu May 19 11:36:04 2016 |
Gabriele | Mechanics | Design | A first design of the disk assembly | Here are some screenshots of the disk assembly
and a look at how four of them will sit into
the vacuum chamber. The Solidworks models |
|
|
39
|
Tue Jul 12 17:19:07 2016 |
Gabriele | Electronics | Daily Progress | ADC and DAC cabling | This afternoon I completed the assembly
of the electronics boards to interface the
ADC and DAC. The ADC is interfaced with a |
|
|
207
|
Tue Nov 22 08:21:35 2016 |
Gabriele | Electronics | Characterization | ADC saturation | Last night measurements didn't work
well: even without exciting the modes, the
ADC was saturating because of the low frequency |
10x |
|
69
|
Thu Jul 28 17:15:22 2016 |
Gabriele | Electronics | Daily Progress | ADC/DAC interfaces upgrade | Installed the ADC and DAC boards into a
proper box. Also, swapped the temporary DAC
board (with cale hack) with the final one. |
|
|
359
|
Thu Jun 29 16:40:41 2017 |
Zach | Electronics | Modeling | Accurate model and force profile | 2017-06-29
I created
a much more accurate model of the current
ESD setup from the technical drawings. My |
|
|
261
|
Thu Jan 12 10:36:47 2017 |
Gabriele | Electronics | Configuration | Added ESD bias path to model CR0 | I added to the model CR0 an additional
bias path for the ESD driver:
|
|
|
472
|
Thu Mar 1 16:25:13 2018 |
Gabriele | General | General | Aging tests | Here's a ongoing summary of the substrate
aging tests.
S1600619
Mark |
18x |
|
430
|
Thu Sep 14 15:59:10 2017 |
Gabriele | Facility | | All wrapped up for Saturday plumbing work | |
|
|
149
|
Thu Oct 27 14:02:38 2016 |
Alena | General | General | Annealing | Annealing run (447-448) on 3" wafers
- Crime 10/27/2016 https://dcc.ligo.org/T1600485-v1
|
|
|
453
|
Thu Jan 25 15:33:51 2018 |
Gabriele, Ben | General | Annealing | Annealing of 50mm disks | Annealing of 8 fused silica substrates
(50mm/0.5mm) started at 3:30pm, January 25th
2018. Standard program: 9 hours ramp up to |
|
|
508
|
Sun Apr 1 10:11:22 2018 |
Gabriele | General | General | Annealing on blanks | Started annealing of blank disks: S1600541
S1600542 S1600545 S1600546 S1600551 S1600552
S1600554 S1600555 |
|
|
155
|
Tue Nov 1 15:34:49 2016 |
Alena, Calum | General | | Annealing run | Annealing run (449-453) on 3" wafers
- Crime 11/01/2016 https://dcc.ligo.org/T1600507 |
|
|
160
|
Fri Nov 4 16:16:23 2016 |
Alena | General | General | Annealing run | Annealing run (454-459) on 3" wafers
- Crime 11/02/2016 https://dcc.ligo.org/LIGO-T1600510
Annealing
run (460-465) on 3" wafers - Crime 11/04/2016 |
|
|
174
|
Thu Nov 10 16:07:13 2016 |
Alena, Calum | General | General | Annealing run | Annealing run (466-471) on 3" wafers
- Crime 11/10/2016
https://dcc.ligo.org/LIGO-T1600524 |
|
|
184
|
Mon Nov 14 08:54:49 2016 |
Alena, Calum | General | General | Annealing run | Annealing run (472-477) on 3" wafers
- Crime 11/11/2016 https://dcc.ligo.org/T1600527 |
|
|
489
|
Sat Mar 24 17:03:57 2018 |
Gabriele | General | General | Annealing run | Started annealing of S1600577 S1600580
S1600582 S1600585 at 5pm
ramp up to 600C at 100C/h |
|
|
491
|
Sun Mar 25 17:10:04 2018 |
Gabriele | General | General | Annealing run | Started annealing of S1600579 S1600581
S1600583 S1600586 at 5:00pm
ramp up to 300 C at 100 |
|
|
494
|
Mon Mar 26 16:10:03 2018 |
Gabriele | General | General | Annealing run | Started annealing of S1600579 S1600581
S1600583 S1600586 at 5:00pm
ramp up to 400 C at 100 |
|
|
496
|
Tue Mar 27 11:41:06 2018 |
Gabriele | General | General | Annealing run | At 11:35am, started annealing of ten fused
silica wafers (50.8mm / 0.1 mm) [S1800611 S1800612 S1800613 S1800614 S1800615 S1800616 S1800617 S1800618 S1800619 S1800620]
ramp up to 900 C at 100 |
|
|
499
|
Wed Mar 28 15:32:07 2018 |
Gabriele | General | General | Annealing run | Started annealing of S1600579 S1600581
S1600583 S1600586 at 3:25pm
ramp up to 500 C at 100 |
|
|
502
|
Thu Mar 29 16:15:08 2018 |
Gabriele | General | General | Annealing run | Samples S1600519 S1600522 S1600565 S1600566 S1600567 S1600568 S1600569
ramp up to 500C at 100C/h
hold
at 500C for 10h
ramp down at 100C/h
|
|
|
506
|
Sat Mar 31 09:58:56 2018 |
Gabriele | General | General | Annealing run | Started annealing of S1600579 S1600581
S1600583 S1600586 at 7:00pm 03/30
ramp up to 600 C at 100 |
|
|
263
|
Wed Jan 18 14:29:16 2017 |
Alena | General | Annealing | Annealing run (489-490) on 3" wafers - Crime 01/18/2017 |
Started annealing run Annealing run
(489-490) on 3" wafers - Crime 01/18/2017 |
|
|
269
|
Fri Jan 20 16:00:36 2017 |
Alena | General | Annealing | Annealing run (491-496) on 3" wafers - Crime 01/20/2017 | Started Annealing run (491-496) on
3" wafers - Crime 01/20/2017 https://dcc.ligo.org/LIGO-T1700036
Will be done by Monday |
|
|
350
|
Wed Jun 21 17:04:20 2017 |
Alena | General | Annealing | Annealing run (541-542) on 3" wafers - Crime 06/25/2017 | Started an annealing run https://dcc.ligo.org/LIGO-T1700271
Will be ready by Friday morning
|
|
|
355
|
Tue Jun 27 09:20:16 2017 |
Alena | General | Annealing | Annealing run (546-551) on 3" wafers - Crime 06/27/2017 | Started annealing run https://dcc.ligo.org/T1700293
Will be ready by June 28th afternoon |
|
|
75
|
Wed Aug 10 09:39:38 2016 |
Gabriele | Electronics | Daily Progress | Annuntio vobis gaudium magnum: habemus Cymac | Yesterday I cloned the cymac2 disk and
installed it into the cymac3.
Jamie tweaked a few things (I can't |
|
|
55
|
Wed Jul 20 10:26:40 2016 |
Gabriele | Electronics | Configuration | Are glitches a digital artifact? | Not so sure anymore...
those glitches do not happen
at regular times
I tried to send |
|
|
388
|
Wed Aug 2 13:47:47 2017 |
Zach | Electronics | Modeling | Arm width Sweep | 2017-08-02
I ran a
sweep of the width of the ESD arms. There
appears to be a linear relationship across |
|
|
233
|
Wed Dec 7 08:48:13 2016 |
Gabriele | Electronics | Configuration | Auto center state written directly to data | I modified the autocenter script. Now while
the picomotor is moving, the variable X3:CR1-AUTOCENTER
takes the value 1, otherwise it is 0. |
|
|
283
|
Tue Jan 31 09:03:12 2017 |
Gabriele | Electronics | Configuration | Auto centering script for the new setup | I wrote an autocenter script for the four
QPD in the new setup (autocenter14.py) and
renamed the script for the old chamber (autocenter0.py). |
|
|
158
|
Fri Nov 4 11:31:11 2016 |
Gabriele | Electronics | Configuration | Autocenter control and model modifications | Removed the peak meter lock from the model,
since it's not used
Added and EPICS binary bit to control |
|
|
110
|
Wed Sep 14 20:17:33 2016 |
Gabriele | General | General | Band-limited excitation | Excitation started at 20:15:30LT, 20 seconds
long. The excitation is band-limited (10
Hz) centered around each of the predicted |
|
|
132
|
Thu Sep 29 15:40:45 2016 |
Gabriele | Optics | Design | Beam profile of new 21mW HeNe laser and tweak of optical lever design | I measured the beam profile of the new
Thorlabs HeNe (21.8 mW measured). The beam
waist is 355 microns, very close to the laser |
|
|
352
|
Thu Jun 22 15:37:20 2017 |
Zach | Electronics | Modeling | Beginning modeling | 2017-06-22
Created
the geometry of the ESD by creating blocks
and joining them with Unions. I then created |
|
|
351
|
Thu Jun 22 13:16:37 2017 |
Zach | Electronics | Modeling | Beginning with COMSOL | 2017-06-21
4:30 pm-
Installed COMSOL, began modeling current
ESD by creating parameters and the first |
|
|
192
|
Wed Nov 16 09:43:25 2016 |
Gabriele, Alastair | General | Daily Progress | CO2 laser polishing setup | Yesterday we assembled the lase polishing
system. The Co2 laser power can be controlled
using a waveplate, so we can turn on the |
|
|
198
|
Thu Nov 17 17:59:44 2016 |
Gabriele, Alastair | General | General | CO2 laser polishing tests | We improved the control software of the
laser polishing system: now the rotation
speed is large when the laser is missing |
|
|
448
|
Tue Dec 19 10:06:04 2017 |
Gabriele | General | Measurements | CO2 polished UW substrates | The four surviving University Wafers 76.2mm/0.5mm
wafers have been CO2 polished. They are identified
by numbers from 1 to 4 on the container. |
|
|
449
|
Tue Jan 2 15:32:39 2018 |
Gabriele | General | Measurements | CO2 polished UW substrates | 2018-01-02
After annealing
3:25pm in chamber, as before
3:28pm
roughing pump on
3:40pm turbo |
|
|
467
|
Tue Feb 27 14:39:21 2018 |
Gabriele | General | General | CO2 polishing | Polished S1600619 S1600620 S1600621 S1600622 |
|
|
471
|
Thu Mar 1 13:20:33 2018 |
Gabriele | General | General | CO2 polishing | CO2 polishing:
S1600584
S1600587
S1600588:
laser tripped near the end, restarted for |
|
|
199
|
Fri Nov 18 09:27:26 2016 |
Gabriele | General | Measurements | CO2 polishing improves the Q !! | The plot below shows that the Q values
of S1600439 improved a lot after the CO2
laser polishing. About 15 modes have Q above |
|